Digging-machine.



J. GOBIET.

DIGGING MACHINE.

APPLICATION FILED AUG 16. |9|3.

Patented July 4, 1916.

3 SHEETS-SHEET I.

Ju/es Gob/(2f. [n wen tor.-

Witnesses:

J. GOBIET.

DIGGING MACHINE.

APPLICATION FILED AUG. 16, 1913.

11,189,935. PatentedJuly l, 1916.

s SHEETS-SHEET 2.

Ju/es Gob/6f I Witnesses: jrwerzzor.

J. GOBIET.

DIGGING MACHINE.

APPLICATION r1150 AUG. 16. 1913.

Patented July 4, 1916.

3 SHEETS-SHEET 3 JULES GOBIET, OF VALENTIGNEY, FRANCE.

DIGGING-MACI-IINE.

Specificationof Letters Patent.

Patented July 4, 1916.

Application filed August 16, 1913. Serial No. 785,150.

T 0 all whom it may concern Be it known that I, J Lns Gosns'r, a citizenof the French Republic, residing at Valentigney, Doubs, France, haveinvented certain new and useful Improvements in Digging-Machines, ofwhich the following is a specification.

This invention has for its object to provide an improved digging machinefor agricultural purposes. The work done by the improved machine issimilar to that done by hand, namely a clod of earth being lifted byeach of the diggers of the machine and then turned over.

This invention is illustrated by way of example in the accompanyingdrawings, in which Figure 1 is a side elevation of an improved diggingmachine, comprising six diggers, of which only the outside left handdigger is shown in the figure. Fig. 2 is a plan of the machine partly inhorizontal section taken through the axis of the crank shaft, show-' ingthe successive positions of the six diggers. Figs. 3, 4, 5 and 6 areviews drawn to a larger scale of certain details of the diggingapparatus.

As shown, the digging apparatus of the improved digging machinecomprises a frame composed of uprights 1, (Fig. 1) and tie rods 2,mounted on a framing 3 constructed after the manner of an automobilechassis. The uprights 1 which are fixed rigidly to the framing 3, bearat their lower ends upon the hind axle 4. To the upper ends of theuprights 1 there are jointed thrust rods 5. Other thrust rods 6 arejointed to the axle 4. These thrust rods 5 and 6 constitute togetherwith the uprights 1 and the support 7, a jointed parallelogram. Thisparallelogram is adapted to be raised and lowered by means of a raisingmechanism not shown, in such a manner that this raising mechanism actsunder one of the thrust rods 5 or 6, so as to leave the support 7 freeto move upward.

Near the center of the support 7 there is provided a bearing 8 (Figs. 1,3 and 4) carrying a crank shaft 9. On the crank pin 10 of this crankshaft there is pivoted a forked part 11 jointed at its forward end to alink 12, and at its rear end by means of an axle 13 to a box 14. Thelink 12 is jointed at its other end to the support 7. The crank shaftalso carries on its axial part the foot of a connecting rod 15, the headof which is jointed to the axle 16 of the box 14. The box 14 serves alsoas a support for the handle 17 of a digging tool or fork 18. This handle17 is adapted to turn in the bearings 19 and 20 of the box 14 (Figs. 3and 4).

The axle 16 has fixed to it a sector 21 (Figs. 3, 4, 5 and 6) adapted torotate in a semi-cylindrical recess in the box 14. The axle 16 has alsofixed to it a lever 22, the other or free end of which is ointed to thehead of a link 23, which is jointed in its turn at 24 to the upper partof the support 7, for instance, at the point where the thrust rod 5 isjointed on in its turn to the said support. This construction is,however, not absolutely necessary, and the link 23 may be ointed at anyother point. Similarly it is not necessary that the lever 22 shall beexactly equal in length to the distance of the axis of the crank shaftfrom the axis. 24 of the support 7, constituting a jointedparallelogram.

The connecting rod 15 may be made in two parts arranged on either sideof the axis of the crank shaft 9 and also of the box 14.

The sector 21 (Figs. 5 and 6) is formed with helical teeth 25 along aportion of its periphery, while the other portion 26 has a less widthand is smooth on its periphery. The result of this is that so long asthe smooth portion 26 of the sector is engaged in the groove 27 the fork18 will not turn. The pinion 28 has helical teeth 29 formed upon it onone side of the groove 27 which teeth are adapted to gear with the teeth25 of the sector, and, as soon as the engagement commences, the diggingfork begins to r0 tateu Referring to Fig. 5 the relative movement of thesector 21 brings the teeth 25 into contact with the helical teeth 29 ofthe pinion 28 whereby the axle 17 is partly rotated upon its axis in aclockwise direction. Since the teeth 25 are wider than the smoothportion 26 of the sector, they will at a certain moment (which isdetermined by the posi tion of the box 14 relatively to the lever 22)engage with the teeth 29 of the pinion 28, and since the groove 27 isslightly offset from the plane of the said pinion the result will bethat the digging fork 18 will be caused to rotate.

The operation of the improved apparatus is as follows :On the crankshaft 9 there is keyed a chain wheel 30 (Fig. 1) or any other suitablegear wheel receiving motion from the motor mounted on the chassis 3. The

crank pin 10 of the crank shaft 9, in rotating around the axis or" thelatter, moves the forked member 11, which bearing upon the link 12compels the axle 13 to move along the path abc. The axle 16, however,moves, in a circular path since the connecting rod 15 revolves aroundthe axis of the crank shaft. From the combination of the path (z?)cdescribed by the axle 13, with the are described by the axle 16, thepoint of the digging fork 18 will be caused to describe the path zv- 'z--.e, since the two axles 13 and 16 are mounted in one and the same box14. At a certain moment of its path, the digging iork will turn on itsaxis as above described, and then. return into its initial position.before entering the ground again.

It is to be understood that the length of the lever may be varied inorder to allow or adjusting the instant at which the digging forkreturns.

If desired, an eccentric fixed in any suitable manner upon the crankshaft may be employed to actuate the foot of the connecting rod 15 forthe purpose of varying or increasing the extent of the upsettingmovement of the digging forks.

Having now described my invention what I claim as new and desire tosecure by Letters Patent is 1. It digging machine comprising a vehicle,a plurality of digging tools, a mechanism for driving each digging tool,each mechanism comprising in combination a first jointed parallelogramfor determining the depth to which the tool digs, a power drivencrank-shaft carried by the said first parallelogram and common to allmechanisms a handle on the digging tool, a box within which said handleis rotatably mounted, a connecting rod whose foot is carried by theaxial part of the said crank-shaft, a first axle mounted in said box andconnected to the head of the connecting rod, a lever hav ing one endmounted on the first axle, a link connected at the other end and forminga second parallelogram with said lever, connecting rod and the rearmember of the first parallelogram which carries the crank-shaft, aforked member rotatable by the crankpin, a link connecting between oneend of the forked member and point on the said rear member of the firstparallelogram, and a second axle mounted in said box cooperamechanismcomprising in combination a first jointed parallelogram for determiningthe depth to which the tool digs, a power driven crank-shattcarried bythe said first parallelogram a d common to all mechanisms, a iandle onthe digging tool, a box within which said handle is rotatably mounted, aconnecting rod whose foot is carried by the axiai part of the saidcrank-shaft, a first axle mounted in said box and connected to the headof the connecting rod, a lever having one end mounted on the first axle,a link connected at the other end and forming a second parallelogramwith said lever, con necting rod and the rear member of the firstparallelogram which carries the crank-shaft, a forked member rotatableby the crankpin, a link connecting between one end of the forked memberand a point on the said rear member of the first parallelogram, a secondaxle mounted in said box and cooperatively engaged by the rear end ofthe forked member, a sector having helical teeth and a smooth peripheralportion arranged in said box and driven by the first axle, a pinion onthe handle of the digging tool having a groove on its periphery andteeth on one side of the groove, the said peripheral portion of sectorengaging in said groove, whereby the box has imparted to it a move mentalong a path determined by the paths described by the said first andsecond axles while the digging tool is given a rotary motion only at themoment when the smooth portion of the sector has reached the end of itscourse, and the teeth on the sector and on the pinion engage and therebyrotate the pinion.

In testimony whereof I have afiixed my signature in presence of twowitnesses.

JULES GOBIET.

Witnesses ALBERT PIHLLIPE DIAVENSPL, Hanson C. Coxn.

Genres of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents,

Washington, n. c." 0

